sysdeps/unix/sysv/linux/libc_fatal.c

   1 /* Copyright (C) 1993-1995,1997,2000,2002, 2003 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 #include <stdio.h>
  20 #include <stdlib.h>
  21 #include <unistd.h>
  22 #include <errno.h>
  23 #include <sysdep.h>
  24 #include <string.h>
  25 #include <abort-instr.h>
  26 #ifndef ABORT_INSTRUCTION
  27 /* No such instruction is available.  */
  28 # define ABORT_INSTRUCTION
  29 #endif
  30
  31 /* Abort with an error message.  */
  32 void
  33 __libc_fatal (message)
  34      const char *message;
  35 {
  36   size_t len = strlen (message);
  37
  38   while (len > 0)
  39     {
  40       INTERNAL_SYSCALL_DECL (err);
  41       ssize_t count = INTERNAL_SYSCALL (write, err, 3, STDERR_FILENO,
  42                                         message, len);
  43       if (! INTERNAL_SYSCALL_ERROR_P (count, err))
  44         {
  45           message += count;
  46           len -= count;
  47         }
  48       else if (INTERNAL_SYSCALL_ERRNO (count, err) != EINTR)
  49         break;
  50     }
  51
  52   /* Terminate the process.  */
  53   _exit (127);
  54
  55   /* The previous call should never have returned.  */
  56   while (1)
  57     /* Try for ever and ever.  */
  58     ABORT_INSTRUCTION;
  59 }
  60 libc_hidden_def (__libc_fatal)